STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[wings]

Thanks, wings

This statement is key:

Considering our simple transformer model, the effect of a short circuit on the secondary is illustrated below. The short circuit effectively removes the distributed capacitance, the core loss and the primary inductance from the model, leaving only the series resistance and  the leakage inductance.

Regards, Larry

thanks to you , you have solved the mystery.

more the toroid have no flux leakage (leakage inductance) wow 

best regards

[wings]

thanks to you , you have solved the mystery.

more the toroid have no flux leakage (leakage inductance) wow 

best regards

next step verify the saturation using this test with hidden secondary coil shorted

http://jnaudin.free.fr/steorn/html/steffecten.htm

.... test the secondary with a diode to recover some back effect 

[synchro1]

I just built and tested an Ossie type Hay wire copper wrapped spiral pancake flux blocker A. I sandwiched the coil between two large ring magnets N facing S, attracted to the steel wire core. When energized, the magnets cinch in towards each other and demonstrate a marked repulsion from a stack of magnets nearby. Imagine a stack of ring magnets behind a pancake flux blocker for a stator, and a stack of ring on the rotor in polarity opposition. The rotor magnets would swing around attracted to the metal wire in the pancake coil, then when they hit the sticky spot, the copper wraps would be energized, not just to eliminate the attraction, but to expose the rotor magnets to the powerfull opposition force from the stack of magnets shielded behind the flux blocker. This is an Orbo with an additional torque booster. I plan to try and build this one.

[LarryC]

@Bruce_TPU
I need to respond here, because I gets errors on the message screen. You are winding correctly.

@wings,
The saturation test works, but you have to adjust your power supply, because the Ohms are cut in half. Lower voltage will get the same current.

Regards, Larry

[LarryC]

thanks to you , you have solved the mystery.

more the toroid have no flux leakage (leakage inductance) wow 

best regards

I didn't catch this when you first sent it, but you are very correct about the low flux leakage in a toroid.

This is only part of the mystery, we (all of us) need to figure out the rest.

Regards, Larry